Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: NASA/GSFC CTX global mosaic: ...

Millions of people visit the Grand Canyon each year. But this year will be different for one portion of the national park.

The NPS recommends avoiding hiking the Grand Canyon's inner trails between 10 a.m. and 4 p.m., when temperatures are at their ...

Flooding near the Grand Canyon forced Arizona officials to closed State Route 64 on Tuesday after 2-3 inches of water fell in the area.

Grand Canyon Railway offers a year-round schedule from the historic depot in Williams, AZ, to the South Rim, plus Polar Express rides at Christmas.

Grand Canyon Railway offers a year-round schedule from the historic depot in Williams, AZ, to the South Rim, plus Polar Express rides at Christmas.

Here’s how to plan a ride aboard the Grand Canyon Railway, a 65-mile journey from Williams, Arizona to the South Rim.

Grand Canyon National Park responders manage a high angle technical rescue system to recovery the body of a man who died from a fall from a South Rim overlook on Wednesday (National Park Service) ...

The majority of the canyon's services and facilities – campgrounds, lodges, guided tours, etc. – are located on the popular South Rim. Because the Grand Canyon is a national park, be aware ...

A man died over the weekend while attempting a rim-to-rim hike of the Grand Canyon, officials with the National Park Service said.

Three inches of rain poured on the Grand Canyon's South Rim on Tuesday, setting off flooding in the town of Tusayan, Ariz., and forcing the evacuation of more than 100 visitors and workers ...